P2ACF

Reductant Temperature Sensor B Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Deterioration in acceleration dynamics
Possible SCR error messages
Increased fuel consumption

Causes

Reagent temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
SCR control module malfunction

How to Fix

Check the integrity of the wiring to the sensor
Inspect connectors for corrosion or damage
Check the sensor resistance (compare with the nominal value)
Measure the reference voltage on the sensor circuit
If necessary, replace the reagent temperature sensor

Related codes

P2ACD P2AD0 P2ACE